Coldfire is a rather different product, though. The instruction set is similar but not identical, and there's no exposed memory bus. (Most of the parts have internal flash and SRAM, like a modern microcontroller.)
> The instruction set is similar but not identical, and there's no exposed memory bus.
Actually, there are a number of offerings in the coldfire v2/v3/v4family with decent performance and external buses including PCI, 10/100 ethernet, USB, ATA, and CAN with DDR memory and parallel bus interface.
Oh, the modern ones absolutely have other external busses -- but not a standard 68000 memory bus. There's no way to hook up an EEPROM with your program on it, for instance.
I see what you are talking about. While the external bus interface on these cold fire parts is not a pin compatible m68k cpu bus, it certainly can access memory devices and uses DMA. From the 5307 manual:
1.3.7.1 External Bus Interface
The bus interface controller transfers information between the ColdFire core or DMA and
memory, peripherals, or other devices on the external bus.
